Machine for corrugating metal strips



A. QOL'DBERGER MACHINE FOR CORRUGATING METAL STRIPS Filed June 27. 1923My "His m Fatcnted Nov. 11, 1924.

UNETED STATES ABRAHAM GOLDBERGER, OF NEW YORK, N. Y.

MACHINE FOR CORRUGATING METAL STRIPS.

Application filed June 27, 1923. Serial No. 647,971.

T 0 all whom it may concern:

Be it known that I, ABRAHAM GOLDBERGER, a citizen of the United States,and resident of the borough of Manhattan, city, county, and State of NewYork, have invented certain new and useful Improvements in Machines forCorrugating Metal Strips, of which the following is a specification.

This invention relates to a machine for corrugating or shaping metalstrips and, more particularly, to a machine for corrugating strips insuitable forms for use in making automobile radiators and apparatus ofsimilar character.

Strips of this character are customarily formed by passing the stripsbetween a pair of intermeshing corrugated rollers having theirperipheries shaped to give the proper form to the strips. In themanufacture of radiator elements the strips are corrugated centrally andprovided with edges offset to space the central corrugated portionssufficiently to form a water channel when a pair of strips are placed inthe proper position on each other. These rolls are usually built upofsets of narrow section rollers or gear dials or wheels mounted closelyadjacent each other on a'common axle, each section roller or gear havinga surface shaped to correspond with that desired for. a correspondingportion of the strip being formed.

An object of my present invention is to provide an apparatus for shapingmetal strips having an improved guide for the strips of metal passing tothe rollers for pressing into the desired configuration.

Other objects of the invention are to provide a set of rollers of thetype indicated with a stationary feeding guide which will permit thestrips of metal to be easily fed to, and removed from the rolls, and topermit a ready adjustment of the sizes and shapes of the rolls.

With these and other objects in view, the invention comprises theapparatus described and set forth in the following specification andclaims.

The various features of the invention are illustrated in theaccompanying drawings in which:

Figure 1 is a sectional elevation through a corrugating roll apparatusembodying a form of my invention taken on line 1-1 of Fig. 2.

Fig. 2 is a front elevation of the apparatus illustrated in Fig. 1.

indicated at 28 in Fig. i.

I Fig. 3 is a side view of a corrugated spacmg strip for automobileradiators showing the type of corrugations produced in the apparatusshown in Figs. 1 and 2.

Fig. 4 is a side View of a pair of strips shaped to form a water channelwhen placed side to side as indicated, and,

Fig. 5 is a detail View of a modified form of guide spacing andsupporting rod forming part of the invention.

In the present invention the strips of sheet metal areguided intoposition between the rolls by means of a pair of stationary guidespositioned one at each end of the set of rolls and held firmly'againstthe endsof the rolls at their line of contact. The guides are supportedon a frame on which the rolls are also supported and, as theguides donot have any movement they enablethe strips of metal to be easilyinserted into position to be engaged by the rolls and pulledtherebetween. No guides need be provided at the exit side of the set ofrolls so that the shaped strips are delivered without contact with anymeans which might interferewith their easy delivery from the rolls.Referring more particularly to the accompanying drawings, the inventionis illustrated as applied to a pair of upper and lower rolls 10 and 12mounted on axles 14 and 16, respectively, supported in a frame 18. Theroll 10 is formed of a middle corrugated roll section 20, which mayprovide a centralcorrugation to the strips as indicated at 22 in Fig. 4,for example, and a pair of end roll sections or gears 24 and 26 whichmay impress corresponding corrugated, portions on strips of metal .27 asThe roll 12 is formed in a similar manner and meshes with the roll 10 asat 30, the rolls loeing separated sufliciently to provide a clearanceand backlash between the teeth of the rollers equal to the thickness ofthe sheets of metal passing therethrough. I p

The length of the rolls is equal to the width of the sheets of metalpassing therethrough and, for the best work it is necessary that theedges of the sheets be in substantial alignment with the edges of therolls. To this end, a pair of guide plates 32 and 34 are mounted on afront wall 36 of the frame 18 and have their faces flat against the endsof the rolls at the place where the rolls interlnesh. As the guides arestationary they permit the sheets of metal to be readily inserted andguided to a position where they may be engaged by the intermeshing rollsand drawn therethrough.

The guides are preferably made of flat plates of curved shape so thatthey may be attached by means of screws 38 at one end to the end edgesof a mounting plate 40 of the same width as the length of the rolls andat their other ends may extend to the end faces of therolls. Themounting plate may then be attached to the front 36 of the frame 18 bymeans of bolts 42 passing through slots 44 in the front 36 to enable theplate to be adjusted to the position of the rolls. The upper portions ofthe guides are also preferably spaced and guided by means of a rod 46immediately in front of the rolls and extending between side plates 48and 50 of the frame 18 and through holes in the guide plates ofsufficient diameter to slide freely over the rod. The guides are spacedon the rod 46 by means of a collar 52 positioned between the guides andby clamping the guides against this collar by means of nuts 54 and 56threaded on the rod 46 against the outer faces of the guides.

l/Vith this arrangement a collar, or combination of collars is requiredfor each different width of rolls, and the adjustment of the guides forslight changes in width is limited. In the modified form of'rod shown inFig. 5, the collar is dispensed with and replaced by a nut 58 on theoppo sit face of the guide from the nut 54- or nut 56 and by themovement of these nuts back or forth on the rod, the distance of theguides from each other may be adjusted very accurately. The rod may beattached to the side walls 48 and 50 of the frame 18 by means ofnuts 60as indicated in Fig. 2, or bymeans of a screw 62 as indicated in Fig. 5or by other suitable means.

The various roll sections may be clamped in position 011 the axles 14and 16 in any suitable manner, as, for example by means of nuts 64 and66 threaded on the shafts 14 and 16, respectively, at one end of therolls and pressing the rolls against suitable stops at the oppoite endsof the rolls. The shafts 14 and 16 are journaled in bearings 68 and 70respectively, on the side Walls 48 and 50 and the distances or spacingof the axles is adjusted by means of bolts 72 spanning the bearingsupports or in any other suit able manner.

The rolls may be of any surface configuration toaccomplish the bendingof the strips to the desired form. For example the strips may be bentinto the form shown at 22 and 28 in Fig. 4 to form water conduits orchannels or into the form shown at 74 in Fig. 3, to form spacingelements for the Water channels by a suitable replacement of the rolls.The rolls may be driven in any suitable manner.

As changes of construction could be made within the scope of myinvention it is intended that all the matter contained in the abovedescription or shown in the accompanying drawings be interpreted asillustrative and not in a limiting sense.

, Having thus described my invention what I claim and desire to secureby Letters Patent is:

1. Apparatus of the type described which comprises, a pair ofintermeshing corrugated rolls, a supporting framework for said rolls, apair of guides fixed to the front portion of said framework andextending rearwardly to overlap with the opposite ends of said rolls atthe place of intermeshing, and a rod extending through the upperportions of said guides and arranged to hold said guides in spacedrelation.

2. Apparatus of the type described which comprises, a pair ofintermeshing corrugated rolls, a supporting frame for said rolls, a pairof guides. fixed to the front portion of said frame and extendingrearwardly to overlap the opposite ends of said rolls at the place ofintermeshing, a rod extending through the upper portions of said guides,and means threaded on said rod for holding said guides in adjustedspaced relation to each other and said rolls.

3. Apparatus of the type described which comprises, a pair ofintermeshing corrugated rolls, a supporting frame for said rolls, amounting plate on the front portion of said frame, a pair of guidesbolted to opposite ends of said mounting plate and extending rearwardlyto overlap the opposite ends of said rolls at their place ofintermeshing, a rod extending through the upper portions of said guidesand mounted in the sides of said frame, and means on said rod forholding said guides in spaced relation and in position relative to saidrolls.

ABRAHAM GOLDBERGER.

